I am still trying to work out what Teams is "setting up for me" when it takes several seconds from opening the bookmark in my browser to having a UI where I can read the chats. It's running on a PC that can render complex graphical scenes in real time but it takes half a minute to see "LGTM!". (Shaking head emoji goes here.)

Then again Teams is still barely an amateur compared to the incomprehensible slowness of Jira.